Stefan Hoffmann
Stefan Hoffmann, Rosenthal DE
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20090077975 | Heat shield element for lining a combustion chamber wall, combustion chamber and gas turbine - The invention relates to a heat shield element for lining a combustion chamber wall, to a combustion chamber and to a gas turbine. The heat shield element comprises a hot side that can be exposed to a hot medium, a wall side opposite said hot side, and a peripheral side adjoining the hot side and the wall side and having a peripheral side surface. Relief slots are introduced into the material in an area of the heat shield element that is susceptible to material cracks induced by thermal stress, thereby limiting crack propagation. | 03-26-2009 |
20090081048 | Turbine Blade for a Turbine - The invention relates to a blade for a turbine comprising a blade wall, a first channel for guiding a first medium and a second channel for guiding a second medium that can be supplied to the turbine blade separately from the first medium. In order to combine both media, which are supplied separately, into one mixture, a turbine blade has least one chamber which is arranged in the interior or in the blade wall and said chamber is connected to said channels via a respective connection line. In order to provide a particularly simple component that is economical to produce, the chamber and/or the outlet conduit are a least partially delimited and/or formed by an insert accommodated in the wall. | 03-26-2009 |
20090185903 | Turbine Blade - The invention relates to a turbine blade comprising a profiled vane around which working gas flows. The working gas cross-flows a front edge of the vane and flows away on a rear edge of the vane. The vane has a first and a second channel system for guiding two media separated from the turbine blade. Combustion taking place inside is reduced in a safe manner to maintain the service life of the turbine blade and to prevent damage in the gas turbine, such that a first outlet connected to the first channel system is arranged in the region of the rear edge for blowing out the first media into the working gas and a second outlet connected to the second channel system is arranged in the region of the rear edge for blowing out the second medium. | 07-23-2009 |
20100083665 | Open-cooled component for a gas turbine, combustion chamber, and gas turbine - An open-cooled component for a gas turbine is provided. The component includes an outer wall that is subjected to a hot gas and at least partially defines a first cavity for a first means. The outer wall is provided with through-openings which open up into the cavity on one side and into a hot gas chamber on the other. The inventive component also includes at least one second cavity for admixing a second means, said second cavity is connected to the through-openings in a fluid-connected manner. A combustion chamber for a gas turbine, and to a gas turbine including one such component is also provided. | 04-08-2010 |
Stefan Hoffmann, Russelsheim DE
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20090308363 | EXHAUST GAS RECIRCULATION DEVICE AND VEHICLE PROVIDED WITH THE SAME - An exhaust gas recirculation device for an internal combustion engine, a controllable exhaust gas recirculation valve for controlling an exhaust gas flow of the internal combustion engine, an exhaust gas cooler for cooling the exhaust gas flow, and a bypass device which has a bypass pipe arranged parallel with the exhaust gas cooler, by means of which pipe the exhaust gas flow can be fed at least partially past the exhaust gas cooler, and which has a controllable bypass switch which is arranged inside a valve housing of the exhaust gas recirculation valve. The invention also relates to a vehicle. | 12-17-2009 |
20150152779 | TURBOCHARGER AND METHOD OF OPERATING TURBOCHARGER - Disclosed are a turbocharger for a combustion engine and a method of operating a turbocharger. The turbocharger may include a variably positionable flow restrictor for restricting flow in a turbocharger inlet of the turbocharger by an amount dependent on a flow restrictor position. The method may include determining an operating point variable of the combustion engine, controlling a first actuator to exert on the flow restrictor a first actuating force for varying the flow restrictor position depending on the operating point variable, determining a crank angle variable of the combustion engine, and controlling a second actuator to exert on the flow restrictor a second actuating force for varying the flow restrictor position depending on the crank angle variable. | 06-04-2015 |
Stefan Hoffmann, Weil Im Schoenbuch DE
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20080228490 | METHOD AND APPARATUS FOR LINKING REPRESENTATION AND REALIZATION DATA - A method and apparatus for creating links between a representation, (e.g. text data,) and a realization, (e.g. corresponding audio data,) is provided. According to the invention the realization is structured by combining a time-stamped version of the representation generated from the realization with structural information from the representation. Thereby so called hyper links between representation and realization are created. These hyper links are used for performing search operations in realization data equivalent to those which are possible in representation data, enabling an improved access to the realization (e.g. via audio databases). | 09-18-2008 |
Stefan Hoffmann, Berlin DE
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20110134482 | PRINTER FOR A CASH REGISTER SYSTEM - The invention relates to a printer for a cash register system that has a computer which has a plurality of interfaces to connect to a cash drawer, a keyboard, a customer display, an operator display, a scanner and/or a monitor as well as a network interface, wherein the printer has a printer housing in which a printer control unit and a printer mechanism are located, and wherein the computer and the printer can be provided with electrical voltage over a power supply unit, wherein the computer is configured as a mini-computer with an extremely small housing with compact dimensions, that the mini-computer is integrated into the printer housing on the one hand and that the mini-computer and the printer can be provided with electrical voltage over a common power supply unit. | 06-09-2011 |
Stefan Hoffmann, Brieselang DE
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20120131167 | Method and Apparatus for User Registration in IMS - A method for user registration in Internet protocol multimedia subsystem is provided including receiving a registration request including a first identification of a control function, comparing said first identification of the control function with a second identification of the control function, and proceeding with the registration request based on the result of said comparing. | 05-24-2012 |
Stefan Hoffmann, Koln DE
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20140144138 | Combustion Chamber Housing and Gas Turbine Equipped Therewith - Combustion chamber housing ( | 05-29-2014 |
Stefan Hoffmann, Freudenstadt DE
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20140345662 | DEVICE FOR CONVERTING THERMAL ENERGY TO ELECTRICAL ENERGY - The invention relates to a device for converting thermal energy to electrical energy, comprising at least one thermoelectric module ( | 11-27-2014 |
Stefan Hoffmann, Bietigheim DE
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20160115702 | METHOD FOR OPERATING A TOWING ROBOT - A method is provided for operating a towing robot, where in the event an error occurs during autonomous driving of a vehicle within a parking lot, the error causing the vehicle to be no longer able to continue its autonomous driving, the towing robot is instructed to tow the vehicle to a predetermined position, so that the towing robot tows the vehicle to the predetermined position in response to the instruction. Also described herein are a towing robot, a parking system, as well as a computer program. | 04-28-2016 |